On Sat, 2 Apr 2005, Tracy R Reed wrote:
Making root filesystems for UML to boot off of is a royal pain. I am
surprised it has not gotten any easier. In the past I have installed an
empty HD just like I wanted it and then copied the fs onto my uml host
computer and it was a real time waster. It seems like there should be
some sort of way to launch a UML kernel pointed at a distro install disk
and go straight into a text based install. I know Gentoo can do this:
Here's one of the scripts I use. It works quite well.
#!/bin/sh -x
/bin/rm root_fs
dd if=/dev/zero of=root_fs bs=1024 count=1 seek=3M
mkfs.ext2 -j -F -v -q root_fs
mount -o loop root_fs mnt
rm swap
dd if=/dev/zero of=swap bs=1024K count=128
mkswap swap
yum -y -d 0 --installroot=`pwd`/mnt install rpm
yum -y -d 0 --installroot=`pwd`/mnt install yum
# yum -y -d 0 --installroot=`pwd`/mnt install filesystem
cp /etc/resolv.conf mnt/etc/resolv.conf
cp /etc/yum.conf mnt/etc/yum.conf
cat >>mnt/etc/fstab <<__END__
/dev/ubd0 / ext3 defaults 1 1
none /proc proc defaults 0 0
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/ubd7 swap swap defaults 0 0
__END__
chroot mnt /bin/sh -x <<__END__
mount -t proc /proc proc
for i in 0 1 2 3 4 5 6 7; do mknod /dev/ubd\$i b 98 \$[ \$i * 16 ]; done
yum -y -d 0 install passwd ruby lynx vim-minimal \
openssh-server openssh man man-pages \
postfix
yum clean all
yum clean headers
echo "abcdefg" | passwd --stdin root
umount /proc
__END__
for f in sysconfig/network hosts sysconfig/network-scripts/ifcfg-eth0
do
cat /etc/$f | sed s/peaseblossom/mustardseed/g | \
sed s/65.70.204.73/65.70.204.69/ >>mnt/etc/$f
done
mkdir mnt/root/.ssh
cat ~/.ssh/id*pub >>mnt/root/.ssh/authorized_keys
chmod -R 600 mnt/root/.ssh
umount mnt
-- Matt
Nothing great was ever accomplished without _passion_
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